Method of producing corrugated, expansible collapsible elements



- H. c. MALLORY METHOD OF PRODUCING CORRUGATED, EXPANSIBLE COLLAPSIBLE ELEMENTS Filed March 23 1920 woen'foz gmvad m Patented May 22, 925.

UNITED STATES PATIENT OFF-ICE.

HARRY C. MALLORY, OF BELLEPORT, NEW YORK, ASSIGNOR, BY MESNE ASSIGNMENTS, TO AMERICAN RADIATOR COMPANY, OF YORK, N. Y., A CORPORATION OF NEW JERSEY.

I METHOD OF PROIOUCING CORRUGATED, EXPANSIBLE COLLAPSIBLE ELEMENTS.

Application filed March 23, 1920. Serial No. 368,115.

To all whom it may concern:

Be it known that I, HARRY C. MALLORY, a citizen of the United States, residing at Belleport, Suffolk County, in the State of 5 New York, haveinvented certain new and useful Improvements in Methods of Producing Corrugated, Expansible Collapsible Elements, of which the following is a full, clear, and exact specification.

My invention relates to improvements in methods of supporting a metal blank to be corru ated or otherwise acted upon, and the same as for its object more particularly to provide a simple, efficient and convenient method of producing corrugations or fods therein in such manner as to insure accuracy and uniformity in the shape of said corrugations or folds, and in the spacing thereof with reference to each other.

Further, said invention has for its object to provide a convenient and positive method of supporting a hollow, cylindrical blank by forming a suitable attaching member at one end thereof and then securing said blank by said attaching member to a suitable rotatable support in order to permit of the free rotation of said blank while producing corrugations therein, or otherwise acting thereon.

Further, said invention has for its object to provide a method of supporting a blank by forming an attaching member integrally therewith, and then reinforcing the same so as to permit of its being securely clamped within a chuck without danger of injuring said attaching member.

Other objects will in part be obvious, and in art'be pointed out hereinafter.

o the attainment of the aforesaidobjects 40 and ends my invention consists in the successive steps constituting my said method or process as hereinafter more fully described, and then pointed out in the claims.

In the accompanying drawings forming part of this specification, I have shown the successive steps followed in carrying out my process, and in connection therewith the essential or necessary parts of a machine required therefor. i

In said drawings, wherein like numerals of reference indicate like parts,

'in place therein b ig. 2 is a similar view showing the closed end of the blank or shell reduced and reinforced to form an attaching member;

Fig. 3 is a side elevation showing the shell or blank as illustrated at Fig. 2,secured in a rotating support or chuck;

Fig. 4 is a central, longitudinal view showing rotating support or chuck, a shell or blank secured therein, and engaged by a pair of corrugating rolls, and

Fig. 5 is a side elevation, partly broken away showing a completed cylindrical corrugated element or structure.

In said drawings 10 designates a thin, cylindrical sheet metal, shell having a closed end 11 which is preferably made somewhat thicker than the side Walls 12 of said shell.

Prior to transversely corrugating said shell 10 asolid metal disk 13 preferably of smaller diameter than said shell is first 'placed into the same, and the closed end 11 of said shell then reduced and rolled into engagement with the edge of said disk 13 to form a boss 14, and said disk held rigidly an annular groove 15 formed between said disk.-13 and the body of said shell 11.

In order to support the shell or blank 10 duly in position within the corrugating machine, the outer, flat surface of the reduced, reinforced boss 14 is placed against the face of a chuck 16, and the edge of said boss 14 firmly clamped against the same by a set of jaws 17 which are actuated by a handwheel 18.

The chuck 16 is su ported by, and freely revoluble in a pivota ly supported bearing 16, in order to permit of the blank 10, and the chuck 16 which carries said blank, being rotated by the corrugating dies while the same are acting upon the blank to produce the corrugations or folds therein.

The chuck 16 with the shell 10 in position is then moved longitudinally into position between a first set of corrugating dies 18 and 19, which are adapted for rotation in opposite directions. As soon as the blank 10 is properly positioned with respect to said 7 blank, forming aboss thereon, reinforcing.

corrugatin rolls l8 and 19, 19, the same are gradually roughttogether to produce the initial corrugation adjacent to the boss 14.

It will, of course, be understood that the first set of corrugating dies only serves to produce a very shallow series of corrugations, and that to produce the ultimate construction the blank 10 must be subjected to the successive action of several sets of corrugating dies,each of which serves to deepen the corrugations or folds somewhat further than the preceding set, until the desired depth of corrugations or folds 18 has been attained. I

It is to be noted, particularly, that by first formin the shell 10 with the interiorly reinforced oss or end 14, a convenient attaching or securin member is provided whereby the entire shel orblank may be rigidly and positively held in position within a chuck or rotating body, and thereby ermit of the feeding or advancin of the b ank forward to the successive actions of the corrugating dies '18 and 19, 19 in such manner as to insure the uniform corrugating of blank, and to prevent all tendency to longitudinal displacement or distortion.

It will be obvious. that my invention is equally applicable 'to flat blanks or disks, and to conical and other structures in order to support the same in position to be corrugated or otherwise acted upon as desired.

Having thus described my invention what I claim and desire to secure by Letters Patent is 1. The method of making a corrugated elastic element which consists in taking a hollow cylindrical blank having a closed end, securing an inelastic disk within the closed end of said blank whereby to reinforce said closed end, and securing said blank by its reinforced end to a support, and then subjecting said blank, while upon said support, to the action of suitable dies to form corrugations or folds therein, substantially as specified.

2. The method of makinga corrugated elastic element which consists in taking a blank, forming a boss thereon securin said blank by said boss to a support, an then subjecting said blank, while upon said support, to the action of suitable corrugating ies to form corrugations or folds therein, substantially as specified.

3. The method of making a corrugated elastic element which consists in taking a said boss, securing said blank by said boss to a support, and then subjecting said blank,

while upon said support, to the action of suitable corrugatin diestoform corruga- Eigps or folds therein, substantially as specili The method of making a corrugated elastic element, which consists in taking naeaoea a blank, forming a reduced boss thereon, I

while upon said support, to the action of suitable corrugating dies to form cora-" tions or folds therein, substantially asL-speci:

6. The method of making a corrugated elastic element-which consists in taking a blank, forming an integral boss thereon, se-

curing said blankby said boss to a support, and then subjecting said blank, while upon said support, to the action of suitable corrugating dies to form corrugations or folds therein, substantially as specified.

7. The method of making a corrugated elastic element which consists in taking a blank, forming a boss thereon, securing said blank by said boss upon a rotatable sup port, rotating said support and said blank in position thereon, and then subjecting said blank to the action of suitable corrugatin dies to form corrugations or folds therem, substantially as specified.

8. The method of making a corrugated element which consists in taking a hollow cylindrical blank having a closed end, forming a boss upon said closed end, securing said blank by said boss in a rotatable support, and then subjecting said blank to the action of suitable corrugatin'g dies to transversely corrugate the same, substantially as specified.

9. The method of making a corrugated element which consists in taking a hollow,

cylindrical blank having a closed end, re 1 1 ducing said closed end, securing said reduced end within a rotatable support, rotating said support and said blank in position thereon, and subjecting saidblankto the action of suitable corrugating dies to form stantially as specified.

10. The method of making corrugated 3 v vessels which consists in taking a hollow, cy-

transverse corrugations or folds therein, sub, L 4 v ing said reduced, reinforced end within a rotatable support, rotating said support and said blank and subjecting said blank to the action of suitable corrugating dies to form transvere corrugations or folds therein, substantially as specified.

11. The method of making corruga vessels which consists in taking a hollow cylindrical blank having a closed end, an reinforcin'g said closed end, securing said blank by its reduced, reinforced end within a rotatable support and presenting said blank, while secured in said support, with a step-by-step movement to the action of suitable corrugating dies whereby to form transverse corrugations or folds therein, substantially as specified.

12. The method of making corrugated vessels'which consists in taking a hollow, cylindrical blank having a closed end, reducing and reinforcing said closed end, securing said blank by its reduced, reinforced end within a freely rotatable support and presenting said blank, while secured in said support, with a step-by-step movement successively to the action of suitable corrugating dies to form a. series of transverse, parallel corrugations or folds therein, substantially as specified.

13. The method of [making corrugated vessels which consists in taking a hollow cylindrical blank having a closed end, reducing said closed end to form a boss thereon, reinforcing said boss, securing said blank by said reinforced boss within a rotatable sup port,- and subjecting said blank to the action of suitable corrugating dies substantially as specified.

14. The method of making corrugated vessels which consists in taking a hollow, cylindrical blank having a closed end, reducing said closed end to form a boss thereon,

. interiorly reinforcing said boss, securing said blank by said reinforced boss, within a rotatable support, and subjecting said blank to the action of suitable corrugating dies,

substantially as specified.

15. The method of making corrugated vessels which consists in taking a hollow, cylindrical blank having a closed end, placing into said blank a disk of smaller diameter than said blank, reducing said closed end to form a boss embracing said disk, securing said blank by said reinforced boss within a rotatable support, and presenting said blank, while upon said support, to the action of suitable corrugating dies whereby to form a series of transverse corrugations or folds therein, substantially as specified.

16. The method of making expansible-collapsible corrugated vessels which consists in taking a hollow, cylindrical blank having a closed end, placing into said blank a disk of substantially inelastic material of smaller diameter than said blank, formin a reduced boss at the closed end of said b ank firmly engaging and embracing said disk, securing said blank by said reduced, reinforced boss within a rotatable chuck, and subjecting said blank, while in said chuck, successively to the action of suitable, rotating corrugating dies whereby to form a series of parallel, transverse corrugations or folds therein, substantially as specified.

Signed at the city of New York, borough of Manhattan, New York county, in the State of New York, this 28th day of February, one thousand nine hundred and twenty.

HARRY C. MALLORY. 

